<!doctype html>
<html lang="en">
 <head>
  <meta charset="UTF-8">
  <meta name="Generator" content="EditPlus®">
  <meta name="Author" content="">
  <meta name="Keywords" content="">
  <meta name="Description" content="">
  <title>Document</title>
  <script src="jQuery复习/jquery-3.3.1.js"></script>
 </head>
 <body>
    <p>pppppppppppppp</p>
    <div id="div_id">divdivdivdivdiv</div>
 </body>
 <script>
    //利用交集选择器获取到所有p元素和div元素的jQuery对象，并为其添加样式
    $("p,div").css({"color":"red","fontSize":"20px"});
 </script>
</html>
